Which of the following does NOT describe a musical motive? A. A melodic or rhythmic fragment. B. The basis for development in a musical piece. C. A short musical idea. D. The reason for playing softly.

The correct answer is D. The reason for playing softly.<br /><br />A musical motive is a short musical idea or fragment that serves as the basis for development in a musical piece. It can be a melodic or rhythmic fragment that is repeated or varied throughout the piece. Options A, B, and C all accurately describe a musical motive. Option D, "The reason for playing softly," does not describe a musical motive and is therefore the correct answer.